Re: Fedora's latest gcc produces unbootable kernels

2007-12-03 Thread Thomas Gleixner
On Mon, 3 Dec 2007, Jakub Jelinek wrote: > On Mon, Dec 03, 2007 at 12:34:17PM +0100, Thomas Gleixner wrote: > > Of course just to annoy you :) > > It doesn't matter whether I'm annoyed about this or not, but whether gcc is > able to generate decent code with it or not. And especially with union

Re: Fedora's latest gcc produces unbootable kernels

2007-12-03 Thread Jakub Jelinek
On Mon, Dec 03, 2007 at 12:34:17PM +0100, Thomas Gleixner wrote: > Of course just to annoy you :) It doesn't matter whether I'm annoyed about this or not, but whether gcc is able to generate decent code with it or not. And especially with union it is not, at least through all the tree ssa passes.

Re: Fedora's latest gcc produces unbootable kernels

2007-12-03 Thread Thomas Gleixner
On Mon, 3 Dec 2007, Jakub Jelinek wrote: > On Mon, Dec 03, 2007 at 09:17:22AM +0100, Thomas Gleixner wrote: > > I looked at the disassembly but I can not spot the problem. > > > > I think the real problem is somewhere else. Likely candidates are > > hrtimer_forward() or hrtimer_start() - in that

Re: Fedora's latest gcc produces unbootable kernels

2007-12-03 Thread Jakub Jelinek
On Mon, Dec 03, 2007 at 09:17:22AM +0100, Thomas Gleixner wrote: > I looked at the disassembly but I can not spot the problem. > > I think the real problem is somewhere else. Likely candidates are > hrtimer_forward() or hrtimer_start() - in that order. Should be hopefully fixed in latest Fedora g

Re: Fedora's latest gcc produces unbootable kernels

2007-12-03 Thread Thomas Gleixner
> On Sat, 1 Dec 2007 18:47:52 +0100 > Pierre Ossman <[EMAIL PROTECTED]> wrote: >> > The latest GCC in Fedora rawhide contains some serious bug (or >> provokes a latent one in the kernel) that makes every kernel built >> unbootable. It just locks up halfway through the init. Kernels that >> previous

Re: Fedora's latest gcc produces unbootable kernels

2007-12-01 Thread Pierre Ossman
On Sat, 01 Dec 2007 13:37:44 -0500 Bill Davidsen <[EMAIL PROTECTED]> wrote: > If you are referring to the "compat" RPMs, be aware that they use the > current headers, which is a good or bad thing depending on what you want > to do. If you want to build old software, you get to keep a down-rev >

Re: Fedora's latest gcc produces unbootable kernels

2007-12-01 Thread Bill Davidsen
Pierre Ossman wrote: On Sat, 1 Dec 2007 15:42:23 +0100 Pierre Ossman <[EMAIL PROTECTED]> wrote: The latest GCC in Fedora rawhide contains some serious bug (or provokes a latent one in the kernel) that makes every kernel built unbootable. It just locks up halfway through the init. Kernels that

Re: Fedora's latest gcc produces unbootable kernels

2007-12-01 Thread Pierre Ossman
On Sat, 1 Dec 2007 15:42:23 +0100 Pierre Ossman <[EMAIL PROTECTED]> wrote: > The latest GCC in Fedora rawhide contains some serious bug (or provokes a > latent one in the kernel) that makes every kernel built unbootable. It just > locks up halfway through the init. Kernels that previously worked

Fedora's latest gcc produces unbootable kernels

2007-12-01 Thread Pierre Ossman
The latest GCC in Fedora rawhide contains some serious bug (or provokes a latent one in the kernel) that makes every kernel built unbootable. It just locks up halfway through the init. Kernels that previously worked fine all now experience the same symptom. Even RH's own kernels exhibit this. Th